The HTU21D Click (MIKROE-1687) from Mikroe™ features the HTU21D and the Temp&Hum 13 Click (MIKROE-3635) features the HTU21DF. These development boards allow customers to evaluate the sensor and create reference designs easily. Click boards are plug-and-play modules designed to add extra functionality to existing development kits. These small, function-specific add-on modules all have a common interface to the mikroBUS™ adapter board. Reference design examples are provided to get the user started quickly.